Site ID: 124 Lat. 30.4852 China Anhui
River: Yangtze Long. 117.0136
Site name: Anqing Contributing area: 1666946 km2 Ratio to Comparison Station: 3.11
Latest measurement: 30-Jul-10 Mean annual runoff: 14 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 7.2 mm
Latest M/C ratio: 1.46 Seven day total: 0.6 mm
Estimated current discharge: 1491 m3/sec Percent of mean 7-day total: 182.4 % (today's value compared to mean for same period, 2003-2009)
Ice-cover determination: 5 yr recurrence flood: 2298 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 2272 m3/sec (from Gumbel Extreme Value analysis)
Comparison Station Information:  Pakse (2469260)           Contributing Area:   sq mi 536010 sq km
(Data from this gaging station are used for the calibration to discharge, with an adjustment for different contributing areas)
Notes: Calibration to nearby ground station has not yet been accomplished.
Discharge and runoff, based on satellite remote sensing (NASA AMSR-E data)
(For U.S, sites, nearby ground station discharge may also be shown)
Annual  Monthly Total Runoff (mm), computed from above satellite-based discharge data
Runoff
(mm) Jan Feb Mar April May June July Aug Sept Oct Nov Dec
8 2002 no data no data no data no data no data no data no data 1.5 2.2 1.8 1.4 1.0
16 2003 1.2 1.1 1.0 0.5 0.3 1.1 1.8 1.9 2.5 2.1 0.8 1.2
18 2004 1.1 1.3 1.6 0.6 0.4 1.3 1.6 2.3 2.3 2.4 1.5 1.5
15 2005 1.2 0.8 1.3 0.6 0.4 0.9 1.4 2.1 2.2 1.6 1.5 1.3
12 2006 0.6 0.8 1.1 0.4 0.4 1.2 1.7 2.7 2.1 1.5 0.0 0.0
13 2007 0.9 0.8 0.6 0.3 0.2 0.7 1.8 2.5 2.1 1.6 1.1 0.7
12 2008 0.4 0.5 0.9 0.7 0.3 0.5 1.5 2.2 2.1 1.1 1.0 1.0
13 2009 0.7 0.4 0.8 0.6 0.3 0.9 1.9 2.4 1.8 1.4 0.9 0.9
7 2010 0.9 0.8 0.7 0.6 0.4 1.0 2.7 0.1 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 14 Standard Deviation: 6.4
Trend in Annual Runoff (slope):  5.9
Discharge is estimated via a rating equation directly from the remote sensing data (M/C ratio) shown below.
Explanation:   Green line records upwelling microwave emission from within 5 km radius of a calbration land target; blue line is emission from within 5 km radious of the measurement target centered over the river.
Brown line is their ratio (M/C; scale on right) and is used to estimate river discharge via a rating equation.
Rating equations are being developed and applied on an individual basis. For calibration status, see "notes" entry, above.
GoogleEarth View of Measurement Site
Return
Estimated
Disharge
Data
Date m3/sec
22-Jul-02 924
23-Jul-02 924
24-Jul-02 924
25-Jul-02 647
26-Jul-02 668
27-Jul-02 697
28-Jul-02 616
29-Jul-02 598
30-Jul-02 531
31-Jul-02 446
1-Aug-02 506
2-Aug-02 506
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02
10-Aug-02 917
11-Aug-02 866
12-Aug-02 1071
13-Aug-02 1023
14-Aug-02 1061
15-Aug-02 965
16-Aug-02 687
17-Aug-02 428
18-Aug-02 558
19-Aug-02 826
20-Aug-02 1020
21-Aug-02 1262
22-Aug-02 1668
23-Aug-02 1871
24-Aug-02 2049
25-Aug-02 1810
26-Aug-02 1639
27-Aug-02 1783
28-Aug-02 1598
29-Aug-02 1559
30-Aug-02 1535
31-Aug-02 1566
1-Sep-02 1795
2-Sep-02 1752
3-Sep-02 1930
4-Sep-02 1829
5-Sep-02 1684
6-Sep-02 1754
7-Sep-02 1434
8-Sep-02 1277
9-Sep-02 1412
10-Sep-02 1699
11-Sep-02 2203
12-Sep-02 2121
13-Sep-02 2401
14-Sep-02 2370
15-Sep-02 1939
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 1375
22-Sep-02 1375
23-Sep-02 1257
24-Sep-02 1257
25-Sep-02 1200
26-Sep-02 1200
27-Sep-02 1679
28-Sep-02 1619
29-Sep-02 1719
30-Sep-02 1637
1-Oct-02 1491
2-Oct-02 1426
3-Oct-02 1353
4-Oct-02 2021
5-Oct-02 1766
6-Oct-02 2002
7-Oct-02 1766
8-Oct-02 1466
9-Oct-02 1632
10-Oct-02 1472
11-Oct-02 1267
12-Oct-02 1267
13-Oct-02 1056
14-Oct-02 1127
15-Oct-02 1337
16-Oct-02 1424
17-Oct-02 1439
18-Oct-02 1114
19-Oct-02 986
20-Oct-02 338
21-Oct-02 381
22-Oct-02 572
23-Oct-02 444
24-Oct-02 464
25-Oct-02 496
26-Oct-02 324
27-Oct-02 676
28-Oct-02 676
29-Oct-02 766
30-Oct-02 841
31-Oct-02 773
1-Nov-02 716
2-Nov-02 716
3-Nov-02 677
4-Nov-02 707
5-Nov-02 899
6-Nov-02 994
7-Nov-02 1054
8-Nov-02 1103
9-Nov-02 1157
10-Nov-02 1025
11-Nov-02 1025
12-Nov-02 1256
13-Nov-02 1232
14-Nov-02 793
15-Nov-02 544
16-Nov-02 422
17-Nov-02 585
18-Nov-02 706
19-Nov-02 1161
20-Nov-02 1292
21-Nov-02 943
22-Nov-02 785
23-Nov-02 699
24-Nov-02 729
25-Nov-02 822
26-Nov-02 919
27-Nov-02 800
28-Nov-02 752
29-Nov-02 752
30-Nov-02 898
1-Dec-02 809
2-Dec-02 856
3-Dec-02 735
4-Dec-02 610
5-Dec-02 550
6-Dec-02 405
7-Dec-02 68
8-Dec-02 92
9-Dec-02 263
10-Dec-02 380
11-Dec-02 580
12-Dec-02 923
13-Dec-02 960
14-Dec-02 1294
15-Dec-02 1294
16-Dec-02 1213
17-Dec-02 1073
18-Dec-02 622
19-Dec-02 462
20-Dec-02 289
21-Dec-02 124
22-Dec-02 118
23-Dec-02 542
24-Dec-02 485
25-Dec-02 746
26-Dec-02 749
27-Dec-02 718
28-Dec-02 884
29-Dec-02 808
30-Dec-02 797
31-Dec-02 797
1-Jan-03 733
2-Jan-03 630
3-Jan-03 667
4-Jan-03 705
5-Jan-03 705
6-Jan-03 837
7-Jan-03 860
8-Jan-03 724
9-Jan-03 715
10-Jan-03 701
11-Jan-03 792
12-Jan-03 886
13-Jan-03 953
14-Jan-03 990
15-Jan-03 790
16-Jan-03 790
17-Jan-03 911
18-Jan-03 1078
19-Jan-03 1192
20-Jan-03 1141
21-Jan-03 1139
22-Jan-03 602
23-Jan-03 392
24-Jan-03 478
25-Jan-03 402
26-Jan-03 761
27-Jan-03 734
28-Jan-03 600
29-Jan-03 837
30-Jan-03 817
31-Jan-03 551
1-Feb-03 551
2-Feb-03 372
3-Feb-03 583
4-Feb-03 965
5-Feb-03 1023
6-Feb-03 1175
7-Feb-03 1270
8-Feb-03 1209
9-Feb-03 1186
10-Feb-03 961
11-Feb-03 694
12-Feb-03 637
13-Feb-03 471
14-Feb-03 235
15-Feb-03 215
16-Feb-03 3
17-Feb-03 3
18-Feb-03 414
19-Feb-03 585
20-Feb-03 1052
21-Feb-03 1198
22-Feb-03 1208
23-Feb-03 1232
24-Feb-03 1370
25-Feb-03 1224
26-Feb-03 978
27-Feb-03 446
28-Feb-03 140
1-Mar-03 3
2-Mar-03 3